<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
        <hr/> 

        <p><b>加粗标签“b”</b></p>
        <p><strong>加粗标签“strong”</strong></p>

        <p><em>倾斜标签“em”</em></p>
        <p><i>倾斜标签“i”</i></p>

        <p><s>划线标签"s"</s></p>
        <p><del>划线标签"del"</del></p>

        <p><u>下横线标签“u”</u></p>

        <sup>上标“sup”</sup>
        <sub>下标“sub”</sub>

        
</body>
</html>